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What are the three types of chemical reactions and how can one determine which type of chemical reaction is taking place?
Please answer in 150 words min.
A buffer solution is prepared by adding 0.125 mol of ammonium chloride to 500 mL of 0.500 M solution of ammonium. What is the pH of the buffer
What is the pH of a hypobromous acid/sodium hypobromite buffer in which the concentration of the weak acid component is 0.068 M and the concentration of the conjugate base is 0.074 M? Hypobromous acid [HOBr] = Ka=2.50e-9.
A system expands in volume from 2.0 L to 24.5 L at constant temperature. Calculate the work (w) if the expansion occurs against a constant pressure of 5.00 atm.
A student used 22.0 mL of 0.1035 M NaOH to titrate 20 mL of orange juice. How many grams of citric acid were present in the sample? The molar mass of citric acid, H3C6H5O7, is 192.12 g/mol.
A uniform air flow over a plane wall at Mach 2.2 and with a temperature of 325 K encounters a symmetrical triangular "bump" on the wall.
What mass of the hydrate could be recovered from the solution? When separated from a H 2 O solution, copper sulphate forms a hydrate with 5
A quantity of 7.031 g of an organic compound is dissolved in water to make 282.0 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27°C.
Calculate the entropy change. What would be the value of S if the heating were carried out irreversibly?
the quantity of cl1- in a water supply is determined bytitrating the sample with ag1. how many moles of chloride ionare
When a 0.325 g sample was studied by combustion analysis, 0.583 g of CO2 and 0.0790 g of H2O formed. How many moles of each of the following were in the original sample
A student is given a sample of pure gaseous element in a spherical container.The student measures the physical properties of the container and determines that it is 0.409 M in diameter and the gas inside it has a mass of 51.10 g.
an auto mechanic spills 78. ml of 2.5 m h2so4 solution from a rebuilt auto battery. how many milliliters of 1.3 m
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